Malt-stirring machine.



No. 684,402. Patented Oct. |75, I90I. F. X. AUMANN.

IALT STIRRING MACHINE.

(Application fsd July 8, 1901.)

2 sheets-snm l.

(lo Model.)

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` @www no. 684,402. Patented oct. l5, 190|.

|=.x.l AunANN'. ALT STIRBING MACHINE.

. (Applicytion led July 8, 1901.) .(No Model.) 2 Sheets-Sheet 2.

UNITED STATES PATENT OFFICE. b

FRANK X. AUMANN, OF MANITOWOC, WISCONSIN, ASSIGNOR OF ONE-HALF TO RUDOLPH OESTREICH, OF SAME PLACE.

MALT-STIRRING MACHINE.

SEECIFICATION forming part of Letters Patent No. 684,402, dated October .15, 1901. Appiicaion inea :ruiy s, 19in. serial No. 67,427. on miner.)

To a/ZZ w'wm i may concern..-

Be it known that I, FRANK X. AUMANN, a citizen of the United States, and a resident of Manitowoc, in the county of Manitowoc and State of Wisconsin, have invented certain new and useful Improvements in Malt-StirringMa'chin'es; and I do herebydeclare that the following is a full, clear, and exact description thereof. io My invention has for its object to prevent growing malt from crowding a traveling stirring-machine and impeding its progress, said invention consisting in providing the agitator-shafts of such machines with feathering- I5 shovels and in matters of detail pertaining to the feathering mechanism, as is hereinafter particularly set forth with reference to the accompanying drawings and subsequently claimed. 2`o Figure l of the drawings represen t-s a partlysectional front elevation of a portion of a traveling malt-stirring machine having the agitator-shafts thereof provided with feathering-shovels in accordance with my invention; c5 Fig. 2, a side elevation of the same, partlyin section, as indicated by lines 2 2 in the first figure; Fig. 3, a detail partly-sectional elevation of feathering-shovel mechanism in working position; Fig. 4, a partly-sectional View 3o looking upward on the plane indicated by line 4 4 in the third figure; Fig. 5, a similar view illustrating another position of the shovel; Fig. 6, a horizontal section indicated by line G 7 in the third figure; and Fig. 7, a similar view indicated by line 7 6 in said third figure, the stationary' collar in this view being partly broken.

Referring by letter to the drawings, A indicates the head of a well-known type of trav- 4o cling malt-stirring machine having screwform agitators B, the shafts C of which are in bevel-gear connection with a drive-shaft D, mounted in bearings on said head. Bolted or otherwise rigidly secured to the under side of the machine-head are bearing-collars E for the agitatorshafts, these collars diering from those usually employed in that each of them has a shoulder at its lower end provided with an outer annular groove b and diamet- 5o rically opposite recesses c intercepting the groove from above the same.

Fitting the lower end shoulder of each stationary collarE is a ring F, having inner diametrically opposite lugs d, that are engaged with shoulder-groove b through the intercepting shoulder-recesses c, a set-screw G being employed to bind said ring in rotarilyadjusted position with respect to said collar. Ring F is also provided with a depending ange F for more than one-half of its circumference, the terminals ofthe ange being inclined and the remainder of its edge horizontal, said ring as a whole constitutingwhat is hereinafter termed areversible cam.l

Made fast on each agitator-shaft C by a set- 6 5 screw H or other suitable means is a fitting I, having ears e, that serve as bearings for the spindle-shank J of a shovel J, a partlyrounded but otherwise angular shoulderfof the shovel being in opposition to a stop g in 7o the form of a tiange ofsaid iitting. A spiral spring K is arranged in connection with fitting I and spindle-shank J of shovel .I to normally hold said shovelin horizontal position, shovel-shoulderf being then parallel with the opposing stop g aforesaid, said shovel-shoulder being partly rounded to provide for stop clearance.

The arrangement of each tting I on its shaft C is such that a corresponding station- 8o ary but reversible cam is in the path` of shoulderf of shovel J, carried by said Iitting. Hence as said shaft rotates said shovel is automatically rocked fromhorizontal to vertical position and so held while there is contact of said shoulder with the horizontal portion of said cam or fora time approximating one-halfof a full rotation of the aforesaid shaft. Shoulder fof the shovel having cleared the cam, previously-contracted spring K ex- 9o pands to automatically return said shovel to i normal horizontal position.

In practice the reversible cams are set by hand to have the depending portions F thereof in front of the machine when moving lengthwise of the corresponding malt-compartment. Hence the rotatory shovels are caused to automatically assume vertical position and remain in that position While moving on arcs of circles forward of the agitatorshafts, said shovels feathering to horizontal position when their shoulders f clear said de- IOO IOv

pending portions of the cams and remaining thus while moving on arcs of circles back of said shafts, the operation of the aforesaid shovels preventing the malt from crowding the aforesaid machine.

In matters of structural detail the mechanism herein particularly set forth may be somewhat varied Without departure from my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, isd l. A traveling malt-stirring machine having spring-controlled pivotal shovels in connection With its agitator-shafts, and reversible cams held stationary in the paths of shovelshoulders to rock said shovels against spring resistance.

2. A traveling malt-stirring machine having fittings stationary on its agitator-shafts, shovels provided with spindle-Shanks loose in ears of the fittings, spiral springs arranged in connection with said ttings and shovel- Shanks, reversible cams held stationary in the paths of shovel-shoulders to rock said shovels against spring resistance, and iianges on said fittings arranged to constitute stops limiting automatic spring adjustmentof the aforesaid shovels.

3. A traveling malt-stirring machine having depending bearing-collars of its head provided with reversible cams, shouldered shovels in springcontrolled pivotal connection With the agitator-shafts ofthe machine, and

means holding said cams stationary in the paths of the shovel-shoulders tol rock said shovels against spring resistance.

holding said cams stationary in the paths 4of shovel-shoulders to rock said shovels against i Y spring resistance.

5. A traveling malt-stirringv machine having depending bearing-collars of its head pro- J di Y vided with lower annularly-ggooved and ver- Y tically recessed shoulders, vshoulder-fitting cams having inner lugs engageable with-,the V55 shoulder grooves through the shoulder-recesses, set-screws holding the camsin adjusted position, fittings in set-screw connection with agitator-shafts of the machine,-

shouldered shovels having spindle-'Shanks foi Y6o which the shaft fittings are provided withV bearings, and spiral springs arranged in connection with said littings and shovel-Shanks, said cams arranged in the paths of the shovel-V shoulders.

In testimony that I claim the Vforagoing I vhave hereunto set myhand,at Manitowoc, in

the county of Manitowoc and State of Wirscousin, in the presence of two witnesses.

FRANK AUMANN.

i Witnesses f LYDIA H. PRU'ss, JOHN C. MARPEK.

45 l spring-controlled pivotal connection with the v agitator-shafts of the machine, and means 

